That a girl you liked or at least you wanted to know and be her friend never let you enter in her life? And at the same time, there were other cool guys whom she welcomed to her life? And then, you feel inferior?
I'm sure this has happened to all of us. Forget about her and move on. No reason to spend time or energy worrying about people that you don't know.
It was a girl I met and we even shared our numbers, well actually I gave her my number and she wrote me, I thought she could be interested in me at least as a friend but meh, what can I say
Keep trying and don't lose hope. Easier said than done, but it's the best advice I can give. There's a lot of fish in the sea. I hated hearing this when I got ghosted by a girl, but it's true. Find one who you respect and who respects you.